The Centalic RE75-SC is a press-in receptacle for the 75 mil (1.91 mm) grid with a solder-cup termination. It is pressed into the fixture's probe plate and the spring probe seats in it, so a probe can be replaced in service without unsoldering or rewiring.
The 1.3 mm mounting hole is the 75 mil standard, the same drill as an INGUN KS-075 body, so a plate laid out for either accepts this receptacle. Choose the 75 mil family when the board's test points are closer than a 100 mil field allows but not tight enough to need a 50 mil build. The SC variant terminates in a solder cup; RE75-WW is the wire-wrap version of the same body.
In Studio this receptacle is paired with the Centalic PE75-A-7.2GG (cupped), PE75-B-5.5GG (needle) and PE75-U-5.5GG (crown) probes, and with the INGUN GKS-075 217 120 A 1500.
